| 摘要 |
A cover for a handheld device having a device body and a speaker. The cover includes a cover body which is configured for covering at a portion of the device body and for covering the speaker. The cover body forms an outlet opening. The cover further includes a channel for communication with the speaker and for harnessing and concentrating sound waves from the speaker to the outlet opening, with the channel having a length and a cross section increasing in magnitude along the length of the channel. |
